presented. We demonstrate that a precise combination of XtalFluor-M, N-bromosuccinimide, and Et3N·3HF can mediate facile, high-yielding, and diastereoselective conversions of 2-O-acyl thioglycosides to β-d- and other 1,2-trans glycosyl fluorides. The key roles of these reagents are dissected in this work, as is the impact of their interplay on the fluorination stereoselectivity.
介绍了一种用于制备 β- d-糖基
氟化物的安全且操作简单的方案。我们证明了 XtalFluor-M、N-
溴代琥珀
酰亚胺和 Et 3 N·3HF 的精确组合可以介导 2- O-酰基
硫苷到 β- d-和其他 1,2-的简便、高产和非对映选择性转化反式糖基
氟化物。在这项工作中剖析了这些试剂的关键作用,以及它们的相互作用对
氟化立体选择性的影响。